文献类型：期刊文献

英文题名：Crystal Growth of Cobalt Film Fabricated by Electrodeposition with Dense Carbon Dioxide

作者：Luo, Xun Chen, Chun-Yi Chang, Tso-Fu Mark Hosoda, Hideki Sone, Masato

第一作者：Luo, Xun;罗勋

通信作者：Luo, X[1]

机构：[1]Tokyo Inst Technol, Precis & Intelligence Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan;[2]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Peoples R China;[3]Japan Sci & Technol Agcy, CREST, Midori Ku, Yokohama, Kanagawa 2268503, Japan

第一机构：Tokyo Inst Technol, Precis & Intelligence Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

通信机构：corresponding author), Tokyo Inst Technol, Precis & Intelligence Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan.

年份：2015

卷号：162

期号：9

起止页码：D423-D426

外文期刊名：JOURNAL OF THE ELECTROCHEMICAL SOCIETY

收录：;EI(收录号：20152901036023);Scopus(收录号：2-s2.0-84937032233);WOS:【SCI-EXPANDED(收录号:WOS:000359177100049)】；

基金：This work has been supported by the Grant-in-Aid for Scientific Research (S) (JSPS KAKENHI grant Number 26220907) and CREST Project operated by the Japan Science and Technology Agency (JST).

语种：英文

外文关键词：Atmospheric pressure - Atmospheric structure - Carbon dioxide - Crystal growth - Crystal structure - Current density - Electrodeposition - Electrodes - Electrolytes - Film growth - Grain boundaries - Grain size and shape - Metallic films - Morphology - Surface roughness

摘要：Dense CO2 was applied in electrodeposition of Co films to examine its effects on the morphology, crystal structure, average grain size, and surface roughness. The dense CO2 is referring to CO2 in liquid state (15 MPa and 25 degrees C), subcritical state (15 MPa and 30 degrees C), and supercritical state (15 MPa and 40 degrees C) here. The electrodeposition with dense CO2 was conducted in a high-pressure cell, and the electrolyte was a mixture composed of 20 vol.% of the dense CO2 and 80 vol.% of the Co electrolyte. Influences of the temperature and applied current density were also studied. The dense CO2, especially supercritical CO2, was found to be effective in eliminating defects formed in the Co films. Morphology of the Co films changed from ridge-like to hemi-spherical-like and particle-like structures with a decrease in the temperature and an increase in the applied current density. The average grain size was found to decrease with an increase in the current density. The Co films electrodeposited at atmospheric pressure were mainly composed of h.c.p. phase and the crystal structure changed to f.c.c.-rich phase when the dense CO2 was used. (C) 2015 The Electrochemical Society. All rights reserved.